Hyundai Sonata: Charging System / Alternator Schematic Diagrams

Hyundai Sonata LF 2014-2019 Service Manual / Engine Electrical System / Charging System / Alternator Schematic Diagrams

Circuit Diagram

•	COM signal - When controlling the voltage generated, the ECM sends the target voltage data to the alternator via a PWM signal.(High voltage: 4V or higher, low voltage: 2V or lower)

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FR signal - The transistor activation signal inside the alternator monitors the voltage generated by the alternator to control the excitation current before it sends the FR signal to the ECM. (At certain RPM/electric loads, the FR duty can remain static. However, more often, the RPM, electric load, target voltage, etc. are always changing in the vehicle, so the FR must also change constantly)

•	L signal - Turns on the battery warning lamp on the dashboard when the battery charging system malfunctions. (Conditions for turning on the lamp - overcharge, over discharge, a field coil blown inside the alternator)

•	B+ terminal - The output voltage from the generator travels to the battery via the B+ terminal.

Alternator Components and Components Location

Components 1. OAD (Overrunning Alternator Decoupler) 2. Front Bracket3. Front Bearing4. Stator5. Rotor6. Rear Bearing7. Rear Bracket8. Brush Holder Assembly9. Through Bolt10. Rectifier Assembly11 ...

Alternator Repair procedures

Removal 1. Disconnect the battery negative terminal. 2. Loosen the mounting bolts (A) and then, turn the adjusting bolt (B) clockwise to loosen tension. 3. Remove the drive belt (A). 4. ...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Air Ventilation Seat Repair procedures
Removal [Ventilation Blower] 1. Disconnect the negative (-) battery terminal. 2. Remove the front seat. (Refer to Body - "Front Seat Assembly") 3. Remove the under cover assembly. (Refer to Body - "Front Seat Cushion Cover") 4. Remove the blower fan (A) after removing the fixed c ...

Hyundai Sonata LF 2014-2019 Service Manual: Relay Box (Engine Compartment) Components and Components Location
Component Location [Engine room junction block] [Metal Core Block (PCB)] ...